How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dr. Hamman Your Own Question

Dr. Hamman
Dr. Hamman, Automotive Engineer
Category: Car
Satisfied Customers: 5868
Experience:  30 years experience, Repairing, building, & designing, automobiles.
9795573
Type Your Car Question Here...
Dr. Hamman is online now
A new question is answered every 9 seconds

Daihatsu SIRION 1.3 sirion automatic transmission when changing

Resolved Question:

sirion automatic transmission when changing from 2-3 gear in drive position vichecile has a braking feeling before going to third gear and does not get over drive
Submitted: 2 years ago.
Category: Car
Expert:  Dr. Hamman replied 2 years ago.

Dr. Hamman :

Hi, I am a professional certified mechanic, with an engineering background, and 35+ years experience. I will do my best to assist you. At Just Answer the deposit you pay is not payment to the Expert, I only get paid if you click on accept, we receive no other pay. I don't know if you are a pro or a novice so we may have to fine tune the answer. I only know as much about your problem as you have told me in your post, so my answer will be based on what you have posted. Feel free to add any additional info you feel is needed. If you are satisfied with the answer, and feel you can leave a positive feedback please click on accept. I don't get paid unless you do.

The braking feeling happens when the gear box/transmission tries to engage into two gears at once. Because the transmission cant operate in two gears at once it binds, and it feels like the brakes have applied. This will totally destroy the transmission. Normally it happen when the transmission is trying to shift, and it is about to disengage from one gear, and it hesitates to disengage, but goes on and engages in the next gear, so there is an overlap where it is in two gears for a short period of time. Normally either some of the hydraulic, or electronic controls have problems, and this problem needs to be diagnosed, and corrected. It is possible that the problem is internally, and not in the controls, but it is much more likely to be a control issue. This is such a strange problem that you need to find someone how knows this type of transmission well, otherwise it will be VERY difficult for the problem to be found. If you have any more questions I am here to help. Good luck, and Thanks for using Just Answer.

I hope this helps, 100% satisfaction is my goal. Just Answer is here to serve you. If the answer is not clear, please let me know what additional help you need, and I will assist you further. When you're satisfied, click on the green accept button. I don't get paid unless you do. A bonus and positive feedback are always appreciated, good luck and Thanks.


Customer:

hi yes i am a tramission machanic have done a complete overhaul gasket seal kit and cluctches when reinstalled the problem was there then put it on the diagnostic tester and told me solonoid no 2 was faulty i changed it and still did the same and still gave the same fault checked wiring harness and did not fined a problem then installed a complete v body from another transmission and still have the same problem

Dr. Hamman :

Hi, I am a professional certified mechanic, with an engineering background, and 35+ years experience. I will do my best to assist you. At Just Answer the deposit you pay is not payment to the Expert, I only get paid if you click on accept, we receive no other pay. I don't know if you are a pro or a novice so we may have to fine tune the answer. I only know as much about your problem as you have told me in your post, so my answer will be based on what you have posted. Feel free to add any additional info you feel is needed. If you are satisfied with the answer, and feel you can leave a positive feedback please click on accept. I don't get paid unless you do.

With all you have done odds are the problem is in the wiring or the controller. I would ohm through all the wires from the controller to the auto gearbox to see if all the wires had continuity. If this auto gearbox had the same problem before you overhauled it the problem could be inside the transmission or the electronics/wires. But if the problem came up after you overhauled it, I would suspect a bad connection in the wiring. Get a wiring schematic for the vehicle and check the continuity of all the wires from the controller to the auto gearbox. Make sure the controller has power and a good ground. It is pretty rare but the gearbox might have porosity problems, where the metal is actually letting fluid pressure escape inside. This would be from a defective casting that blew out inside, and is not routing pressure to the clutch packs, and other parts, like it was designed to. Because the diagnostic tester and told you the solonoid no 2 was faulty, and it didnt stop the problem when you changed solonoid no 2, I bet the problem is in the wiring or the controller. Like I said get a wiring schematic for the vehicle and check the continuity of all the wires from the controller to the auto gearbox. Make sure the controller has power and a good ground. This is probably your best way to find the problem. Be sure to look for dirty or bad connections, they cause a lot of this type of problem. If you have any more questions I am here to help. Good luck, and Thanks for using Just Answer.

I hope this helps, 100% satisfaction is my goal. Just Answer is here to serve you. If the answer is not clear, please let me know what additional help you need, and I will assist you further. When you're satisfied, click on the green accept button. I don't get paid unless you do. A bonus and positive feedback are always appreciated, good luck and Thanks.


Customer:

ok will try this as soon as im finish i will let you no thanks for the help so far i tend to agree with you have only test transmission harness not to the controller speak soon

Dr. Hamman :

Good luck with it these types of problems can be tough to find.

Dr. Hamman, Automotive Engineer
Category: Car
Satisfied Customers: 5868
Experience: 30 years experience, Repairing, building, & designing, automobiles.
Dr. Hamman and other Car Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV. Dutch USA
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
  • http://ww2.justanswer.com/uploads/TE/TedG/2012-6-15_14759_avaLarge.64x64.jpg Ted G.'s Avatar

    Ted G.

    ASE Certified Technician

    Satisfied Customers:

    1596
    20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    1311
    ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    ASE Master Tech

    Satisfied Customers:

    2367
    ASE Master Tech advanced level specialist
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1906
    ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    942
    12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes
  • http://ww2.justanswer.com/uploads/ST/Steve7654/2012-6-5_215929_japic800x660.64x64.jpg Steve's Avatar

    Steve

    Auto Service Technician

    Satisfied Customers:

    1980
    25+ yrs experience as a professional working technician; ASE L1 master technician